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(ModeL) O. E. SORIBNER.

Electric Annunoiatoi' Drop.

No. 233,705. Patented Oct. 2 6, I880.

Witnesses Inve 111/01 i wa /b2; 64%! 5 W N. PErERs. PHOTO-LITHOGRAPNER. wAsmNQTbN D C UNITED STATES PATENT QFFICEQ CHARLES E. sCRIBNER, OF CHICAGO, ILLINoIs, ASSIGNOR TO WESTERN ELECTRIC MANUFACTURING COMPANY, OF SAME PLACE.

ELECTRlC-ANNUNCIATOR DROP.

SPECIFICATION forming part of Letters Patent No. 233,705, dated October 26, 1880,

Application filed August 24, 1880.

To all whom it may concern:

' Be it known that I, GHARLEs E. SCRIBNER, of Chicago, in the county of Cook and State of Illinois, have discovered certain new and useful Improvements in Elcctric-Annunciator Drops, of which the following is a full, clear, concise, and exact description.

In the drawings, Figure l is a front elevation of my annunciator-drop, and shows the drop or shutter a in its normal position. Fig. 2 shows the drop tilted over, a portion being broken away to show the tilting-bar b, which is attached to the armature 0. Figs. 3 and 4 are sectional views of the annunciator-drop upon lines 00 w and 3 y of Figs. 1 and 2.

' The wire (1 extends through the opening shown in the plate, and is fastened to the armature in any suitable manner. The portion 0, which extends in front of the armature, forms a stop, which keeps the drop from tilting over when shaken or jarred accidentally. The outer end of the stop is at a short distance from the drop. The portion of the wire d which extends back of the armature simply serves as a balance to the armature, and, if necessary, its weight may be increased by adding a small adjustable ball.

A tilting-bar and stop have each been used singly, attached to the armature; but the results have not been wholly satisfactory, since in the one case there was nothing to guard against accidental jars, and in the other the drop or shutter rested against the stop or catch,

(ModeL) necessitating a stronger current to release the shutter from the stop, on account of the friction thus produced between them.

I have used a catch attached to the armature in place of the stop, said catch extending upward and engaging with the upper part of the drop.

By the use of the tilting-bar and stop or catch attached to the armature the most perfect results are obtained.

When the armature is drawn to the core the stop and tilting-bar move with it. The stop comes below the lower edge of the drop, (or, in case a catch is uscd,it is lifted from engagement with the upper portion of the drop,) and at the same time the tilting-bar is moved toward the drop and crowds or carries it over, so that it falls, as shown, the armature resuming its former position as soon as the cores be come demagnetized.

The shutter is so adjusted that its weight causes it to rest against the frame, as shown. The stop does not touch the shutter, but is wholly free from it.

I claim In an electric-antiunoiator drop, the combination of a tilting-bar with a stop or its equivalent attached to the armature, substantially as shown and described.

CHARLES E. SORlBNER. Witnesses JAMES L. BAIRD, GEORGE I. BARTON. 

